Ethyl 3-[[2'-(N-t-Butylsulfamoyl)biphenyl-4-yl]methyl]-2-methoxyimino-4-oxooctanoate 、 2-chloro-5-nitrophenylhydrazine hydrochloride 、
溶剂黄146 在
氮气 、
盐酸 、
乙酸乙酯 、
水 、
Sodium sulfate-III 、 silica gel 作用下,
以
乙二醇甲醚 为溶剂,
反应 20.0h,
以Flash chromatography of the residue twice on silica gel (first column eluted with 2% MeOH in CH2Cl2, second column eluted with 1% MeOH in CH2Cl2) to provide 1.71 g (47%) of the title compound as a viscous, orange oil的产率得到ethyl 3-n-butyl-1-(2-chloro-5-nitrophenyl)-4-[(2'-sulfamoylbiphenyl-4-yl)methyl]-1H-pyrazole-5-carboxylate